/*
 * Copyright (c) 2010 TELEMATICS LAB, DEE - Politecnico di Bari
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation;
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Author: Giuseppe Piro  <g.piro@poliba.it>
 * Author: Marco Miozzo <marco.miozzo@cttc.es> : Update to FF API Architecture
 * Author: Danilo Abrignani <danilo.abrignani@unibo.it> : Integrated with new architecture - GSoC
 * 2015 - Carrier Aggregation
 */

#ifndef LTE_ENB_NET_DEVICE_H
#define LTE_ENB_NET_DEVICE_H

#include "component-carrier.h"
#include "lte-net-device.h"

#include "ns3/event-id.h"
#include "ns3/mac48-address.h"
#include "ns3/nstime.h"
#include "ns3/traced-callback.h"

#include <map>
#include <vector>

namespace ns3
{

class Packet;
class PacketBurst;
class Node;
class LtePhy;
class LteEnbPhy;
class LteEnbMac;
class LteEnbRrc;
class FfMacScheduler;
class LteHandoverAlgorithm;
class LteAnr;
class LteFfrAlgorithm;
class LteEnbComponentCarrierManager;

/**
 * \ingroup lte
 *
 * The eNodeB device implementation
 */
class LteEnbNetDevice : public LteNetDevice
{
  public:
    /**
     * \brief Get the type ID.
     * \return the object TypeId
     */
    static TypeId GetTypeId();

    LteEnbNetDevice();

    ~LteEnbNetDevice() override;
    void DoDispose() override;

    // inherited from NetDevice
    bool Send(Ptr<Packet> packet, const Address& dest, uint16_t protocolNumber) override;

    /**
     * \return a pointer to the MAC of the PCC.
     */
    Ptr<LteEnbMac> GetMac() const;

    /**
     * \param index CC index
     * \return a pointer to the MAC of the CC addressed by index.
     */
    Ptr<LteEnbMac> GetMac(uint8_t index) const;

    /**
     * \return a pointer to the physical layer of the PCC.
     */
    Ptr<LteEnbPhy> GetPhy() const;

    /**
     * \param index SCC index
     * \return a pointer to the physical layer of the SCC addressed by index.
     */
    Ptr<LteEnbPhy> GetPhy(uint8_t index) const;

    /**
     * \return a pointer to the Radio Resource Control instance of the eNB
     */
    Ptr<LteEnbRrc> GetRrc() const;

    /**
     * \return a pointer to the ComponentCarrierManager instance of the eNB
     */
    Ptr<LteEnbComponentCarrierManager> GetComponentCarrierManager() const;

    /**
     * \return the Cell Identifier of this eNB
     */
    uint16_t GetCellId() const;

    /**
     * \return the identifiers of cells served by this eNB
     */
    std::vector<uint16_t> GetCellIds() const;

    /**
     * \param cellId cell ID
     * \return true if cellId is served by this eNB
     */
    bool HasCellId(uint16_t cellId) const;

    /**
     * \return the uplink bandwidth in RBs
     */
    uint16_t GetUlBandwidth() const;

    /**
     * \param bw the uplink bandwidth in RBs
     */
    void SetUlBandwidth(uint16_t bw);

    /**
     * \return the downlink bandwidth in RBs
     */
    uint16_t GetDlBandwidth() const;

    /**
     * \param bw the downlink bandwidth in RBs
     */
    void SetDlBandwidth(uint16_t bw);

    /**
     * \return the downlink carrier frequency (EARFCN)
     */
    uint32_t GetDlEarfcn() const;

    /**
     * \param earfcn the downlink carrier frequency (EARFCN)
     */
    void SetDlEarfcn(uint32_t earfcn);

    /**
     * \return the uplink carrier frequency (EARFCN)
     */
    uint32_t GetUlEarfcn() const;

    /**
     * \param earfcn the uplink carrier frequency (EARFCN)
     */
    void SetUlEarfcn(uint32_t earfcn);

    /**
     * \brief Returns the CSG ID of the eNodeB.
     * \return the Closed Subscriber Group identity
     * \sa LteEnbNetDevice::SetCsgId
     */
    uint32_t GetCsgId() const;

    /**
     * \brief Associate the eNodeB device with a particular CSG.
     * \param csgId the intended Closed Subscriber Group identity
     *
     * CSG identity is a number identifying a Closed Subscriber Group which the
     * cell belongs to. eNodeB is associated with a single CSG identity.
     *
     * The same CSG identity can also be associated to several UEs, which is
     * equivalent as enlisting these UEs as the members of this particular CSG.
     *
     * \sa LteEnbNetDevice::SetCsgIndication
     */
    void SetCsgId(uint32_t csgId);

    /**
     * \brief Returns the CSG indication flag of the eNodeB.
     * \return the CSG indication flag
     * \sa LteEnbNetDevice::SetCsgIndication
     */
    bool GetCsgIndication() const;

    /**
     * \brief Enable or disable the CSG indication flag.
     * \param csgIndication if TRUE, only CSG members are allowed to access this
     *                      cell
     *
     * When the CSG indication field is set to TRUE, only UEs which are members of
     * the CSG (i.e. same CSG ID) can gain access to the eNodeB, therefore
     * enforcing closed access mode. Otherwise, the eNodeB operates as a non-CSG
     * cell and implements open access mode.
     *
     * \note This restriction only applies to initial cell selection and
     *       EPC-enabled simulation.
     *
     * \sa LteEnbNetDevice::SetCsgIndication
     */
    void SetCsgIndication(bool csgIndication);

    /**
     * \brief Set the ComponentCarrier Map of the Enb
     * \param ccm the map of ComponentCarrierEnb
     *
     */

    void SetCcMap(std::map<uint8_t, Ptr<ComponentCarrierBaseStation>> ccm);

    /**
     * \returns  The Component Carrier Map of the Enb.
     *
     */

    std::map<uint8_t, Ptr<ComponentCarrierBaseStation>> GetCcMap() const;

  protected:
    // inherited from Object
    void DoInitialize() override;

  private:
    bool m_isConstructed; ///< is constructed?
    bool m_isConfigured;  ///< is configured?

    /**
     * \brief Propagate attributes and configuration to sub-modules.
     *
     * Several attributes (e.g., the bandwidth) are exported as the attributes of
     * the LteEnbNetDevice from a user perspective, but are actually used also in
     * other sub-modules (the RRC, the PHY, the scheduler, etc.). This method
     * takes care of updating the configuration of all these sub-modules so that
     * their copy of attribute values are in sync with the one in
     * the LteEnbNetDevice.
     */
    void UpdateConfig();

    Ptr<LteEnbRrc> m_rrc; ///< the RRC

    Ptr<LteHandoverAlgorithm> m_handoverAlgorithm; ///< the handover algorithm

    Ptr<LteAnr> m_anr; ///< ANR

    Ptr<LteFfrAlgorithm> m_ffrAlgorithm; /**< DEPRECATED - It is maintained for backward
                                            compatibility after adding CA feature*/

    uint16_t m_cellId; /**< Cell Identifier. Part of the CGI, see TS 29.274, section 8.21.1  */

    uint16_t m_dlBandwidth; /**<DEPRECATE - It is maintained for backward compatibility after adding
                               CA feature- downlink bandwidth in RBs */
    uint16_t m_ulBandwidth; /**<DEPRECATE - It is maintained for backward compatibility after adding
                               CA feature- uplink bandwidth in RBs */

    uint32_t m_dlEarfcn; /**<DEPRECATE - It is maintained for backward compatibility after adding CA
                            feature- downlink carrier frequency */
    uint32_t m_ulEarfcn; /**<DEPRECATE - It is maintained for backward compatibility after adding CA
                            feature- uplink carrier frequency */

    uint16_t m_csgId;     ///< CSG ID
    bool m_csgIndication; ///< CSG indication

    std::map<uint8_t, Ptr<ComponentCarrierBaseStation>> m_ccMap; /**< ComponentCarrier map */

    Ptr<LteEnbComponentCarrierManager>
        m_componentCarrierManager; ///< the component carrier manager of this eNb

}; // end of class LteEnbNetDevice

} // namespace ns3

#endif /* LTE_ENB_NET_DEVICE_H */
